Pipe-cutting machine.



PATENTED OCT. 3, 1905.

H. SCHMIDT. PIPE CUTTING MACHINE.

APPLICATION TILED (IAN.17, 1905.

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- Q: minesaesx Inventor:

HENRY SCHMIDT, OF NEl V YORK, N. Y.

PIPE- GUTTING MACHINE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed January 17. 1905. Serial NO. 241,437.

To (all? whom it may concern:

Be it known that I, HENRY SCHMIDT, a subject of the Emperor of Germany, residing in New York city, borough of Manhattan, State of New York, have invented certain new and useful Improvements in Pipe-Cutting Machines, of which the following is a specification.

The object of my invention is to provide a simple and convenient machine adapted to be placed upon a pipe, whereby the latter may be cut by the cutter of the machine.

My invention comprises the novel details of improvement and the combinations of parts that will be more fully hereinafter set forth, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part hereof, wherein-- Figure 1 is a face view of a pipe-cutting machine embodying my invention. Fig. 2 is a side view thereof, partly broken away. Fig. 3 is a horizontal section on the line 3 3 in Fig. 1; and Fig. a is a top view, partly in section, on the line 4: 1 in Fig. 2.

Similar numerals of reference indicate corresponding parts in the several views.

The numeral 1 indicates a main frame which has parallel ways or guides 1, a breastplate or handle 1, and a foot to rest upon a pipe shown in the form of angularly-disposed extensions 1, which may be provided with screws 2 to bear on a pipe. Guided by the ways 1 of frame 1 is a movable frame 3, which has one or more cross-webs supporting the cutter or circular saw 4: and gearing 5 6 7. The frame 3 is held upon frame 1 and made readily detachable therefrom by means of screws 8, which enter threaded holes in frame 1 and have their heads overlying the side members of frame 3. (See Fig. 3.) The cutter 3 and pinion 5 are secured together and carried by a pivot 9, supported by web 3 of frame 3, gear 6 is supported upon a pivot 10, carried by web 3 of frame 3, and gear 7 is supported upon a pivot 11, carried by web 3 of frame 3, whereby said frame and the cutter and gearing are all movably carried with respect to frame 1.

At 12 is a handle firmly connected with gear 7, as by being attached to pivot 11, and a screw 13 may further secure said handle to gear 7.

At 14 is a screw or worm. shaft having its lower end journalcd in a bearing or step in frame 1, and its upper end is shown guided by a screw 15, carried by a projection 16, ex-

tending from frame 1, whereby said screw or worm is mounted to rotate. meshes in corresponding threads of a nut 17 in a projection 17, extending from frame 3. To screw or worm shaft 145 is secured a gear 18, that meshes with a gear 19, carried by shaft 20, journaled in bearings 21 on frame 1, and at 22 is a hand wheel or pulley secured on shaft 20 to rotate gear 19, and thereby operate screw 14,. The screw 14 and projections 16 17 serve to guide the lower part of frame 3 on frame 1.

In using the pipe-cutter above described its foot portion is placed upon a pipe and wheel 22 is rotated to cause screw 14 to feed saw or cutter 4 into contact with the pipe. The saw or cutter is then rotated by means of the gearing 5 6 7 and handle 12, and as the pipe is cut the saw or cutter is fed to the work by rotating wheel 22, the screw 14; and threads 17 thereby causing frame 3 to descend. If the pipe to be cut is of greater diameter than the saw or cutter 4 will pass through at one feeding, the pipe maybe cut as far as desired and then'rotated under the cutter and another out made, and so on until the walls of the pipe are out through. The device may be used for cutting bars and other work as well as pipes. After the saw or cutter has completed its work it may be retracted or raised by reversing the rotation of wheel 22, whereby screw 1 1 will cause frame 3 to rise.

By means of the screws 2 the main frame can conveniently be set upon a pipe so that the cutter 4 will be at an angle to the longi tudinal axis of the pipe when it is desired to cut the pipe on a bias.

My invention is not limited to the details of construction shown nor to the arrangement of gearing set forth, as the same may be varied without departing from the spirit thereof.

Having now described my invention, what I claim is- 1. The combination of a pair of frames, one guided to 'move along the other, a rotary cutterand means to operate the same carried by the movable frame, the main frame having a foot at the bottom having angularly-disposed extensions diverging downwardly to bear upon a pipe, a screw guided by the main frame parallel to the movable frame, the latter frame having threads receiving said screw, a gear connected with said screw, a shaft carried by the main frame and provided with a gear meshing with the first-named gear, and means to rotate said shaft, substantially as described.

The screw 14c- 10 thereon, a gear connected with the lower end of said screw, a shaft supported in bearings on said foot, a gear carried by said shaft and meshing with the gear on the screw, and a hand-Wheel carried by said shaft, substantially as described.

HENRY SCHMIDT.

\Vitnesses:

T. F. BOURNE, M. HOLLINGsHEAD. 

